The US is moving back to .45 ACP
but i will agree with you on the 92 being a piece of shit. no power, heavy as shit and jams like a bitch. hence my dads reasoning for switching from his issued 92 to his personal G22. i do indeed love the 1911, and i hope all branches go back to it regardless. there have been enough improvements in magazine capacity etc etc for it to be a perfect choice.
Major portions of the US military are considering going back to the .45 ACP, away from the 9mm, for stopping power, among other things. I know some EU nations are considering the .45 ACP again for some special units for the same reasons, including supression (as it is subsonic).
The US military has also, increasingly shown a desire to get away from the 5.56x45 for both stopping power and range as well. The general shift has been towards the existing 7.62x51, but there are also the 6.8 SPC and others. There was a move to the caseless ammo, but that shift doesn't look like it will happen unless there is a 2x improvement in effectiveness.
It's ironic that the 6.8 SPC is basically what the British wanted to adopt in the .280 after WWII, for a 300m engagement (which the Nazis showed with the 7.92x33, and the Russians with the eventual 7.62x39), although the 6.8 SPC doesn't have good flight ballistics, still leaving units with the same problem as the 5.56 in the wide-open desert. Even the US almost went with the .276 Pederson before WWII, and that would have been that (possibly with improvements in the .276 cartridge later on).
Instead, we have this split 5.56 and 7.62 approach, with all sorts of special and wildcat cartridges.
Ironically I think the answer is actually in variants of the PPC, like the 6.5 (really 6.7) Grendel, like it's 123gr (8g) incarnation that really results in great ballistics that best the 6.8 SPC close up, and even the 7.62 NATO at 1,000m (still being supersonic). It's really the jack-of-all trades, works well in a 12-16" barrel and a 20-24" sniper version.
At the same time, there is an argument that the magazine design of the 7.62x39 Russian, being that the PPC/Grendel share its parent case, are superior (even with the taper). I know the Grendel is proprietary, but they should have been researching those designs. Even the US Marines have a 6mm sniper variant that is similar.
In any case, an intermediate that is far better than the 5.56 NATO (especially in a short barrel) is sorely needed. And the 7.62 NATO is often over-powered, and can be bested by an intermediate round. Just seems like the US should have realized this in the '50s. While the British .280 wasn't the answer, and the 6.8 SPC isn't any more of an answer today, there have been many intermediate designs with great short-range power that still give a great, flat trajectory out to 700-1,000m, more on-par with the 7.62 NATO at a weight that is closer to the 5.56.